You can't add a new PvP mode and then halve the population of the smallest data center, and expect queues to be alright. I don't care if you want to split the worlds into two groups, with two cross-server party finders, but you ultimately need to ensure they share one duty finder system. The queue times are already abysmal as it currently stands. What happens when most people start jumping ship and an imbalance grows between the two data centers?